I agree, the current format seems fine to me. You could probably get away with splitting things up into a small number of categories (e.g. "Announcements / Beta Updates", "Bug Reports / Tech. Issues", "Feature Requests", and "General Discussion"). I'm not sure a tagging system would be a better idea for this type of forum, though. It works well for stackoverflow.com because of the extensive range of languages, frameworks, utilities, and so on.

Anyhow, you already mentioned what I consider to be the best way to "upgrade" the forum. A well maintained wiki would do wonders for people simply interested in the random tidbits and nuggets of information that are often hidden in rather dull looking threads. Many of your replies to mundane questions/problems are so perfectly detailed and illustrated that it's a real shame for them to go unreferenced. I bet many people here already keep an extensive list of bookmarks to such posts.